KR20100036874A - High-place work vehicle - Google Patents

Abstract

PURPOSE: An aerial work platform is provided to safely work in a narrow space by moving the platform in a right angle direction, and to secure a wide working space. CONSTITUTION: An aerial work platform comprises a movable bogie(110), a worktable, a lifting device(130), a load cell, and a controller. Multiple wheels(111) are installed in the movable bogie. The wheels are connected by an angle adjustment shaft. The angle adjustment shaft is forcefully rotated by an actuator. The worktable is composed of a step and a handrail, and moved by the movable bogie. The lifting device ascends the worktable. The load cell is installed in the lifting device, and senses a load applied to the lifting device in rear time. If the sensed load is bigger than a pre-stored load, the controller stops driving of the lifting device.

Description

Aerial work platform {HIGH-PLACE WORK VEHICLE}

The present invention relates to an aerial platform, and more particularly to an aerial platform that can be run in a perpendicular direction with respect to the front without a risk of falling in a narrow workspace.

In addition, the present invention relates to an aerial platform capable of preventing a safety accident and shortening the lifespan caused by overloading by stopping the operation when the working load is loaded above the limit weight.

In addition, the present invention relates to an aerial platform that allows the operator to work safely even without changing the location of the aerial platform by securing the maximum space for the operator can work.

In general, aerial platform is used for the construction of pipes, ducts, lights, etc. of ceilings of more than 4 meters high, and painting, plastering, and installation of high buildings. Are distinguished.

The aerial platform according to the prior art is provided with a mobile trolley which is moved by its own power, a working platform which is moved by the mobile trolley, and provides a space for a worker to work on board, and between the mobile trolley and the working platform. And an elevating means for elevating the work.

The trolley has many wheels, for example four. The wheels are rotated and driven by receiving rotational force through respective hydraulic motors, and the wheels disposed at the front side are mounted to be adjustable in angle as steering wheels.

The working phase may consist of scaffolding and handrails.

The elevating means elevates the working by forcibly folding by the hydraulic cylinder in a form in which two links, each of which is connected by a plurality of rods hinged, are hinged to each other.

However, the aerial platform according to the prior art has the following problems.

The wheels of the trolley can enable turning of the aerial platform by steering wheels in the front, but there is a risk of working in a narrow space because the turning angle is less than right angles. In detail, when the aerial platform is stopped in a safe direction for both work and driving, it is possible to move in a right direction through the steering wheel when the work is required at right angles. There is discomfort and it takes a long time to travel.

Of course, even if it takes a long time to move, if the aerial platform is safe to move, there is no big problem, but to move the aerial platform in a right direction requires a large radius for the movement, if the work space is a subway platform There is a problem that the aerial platform can fall from the platform because it is difficult to secure the free space for moving the working table in the perpendicular direction.

In addition, the aerial platform is a work and the strength of the lifting means, the limit weight of the hydraulic cylinder is determined, and the deviation and malfunction may occur if the strength and the weight outside the limit, but conventionally there is a way to recognize such problems Since there is no operator to load the heavy load arbitrarily, there is also a problem that a safety accident occurs such that the lifting means is broken or the momentary fall by the operator by performing the work in the state of loading more than the limit weight.

In addition, because the aerial platform is working in a place where the work space is not large, it is not possible to increase the size of the work so as not to interfere with the surrounding structure when moving. In other words, the work is usually not largely out of the area of the mobile cart, and when the worker is working on the work, there is a problem that the mobile cart can only move by moving the mobile cart to work out of the worker's behavior radius.

The present invention is to solve the above problems, to provide a aerial platform to reduce the travel time and to safely move right angles in a narrow space by allowing the mobile cart to move in a right direction through one operation to the front. The purpose is.

In addition, another object of the present invention is to provide an aerial platform that can notify the operator when the load on the working load by detecting the load on the working load.

In addition, another object of the present invention is to minimize the volume of the work so as not to interfere with the surrounding structure when moving the aerial platform, but when the work is secured a wide working space even if the operator does not move a large workspace Its purpose is to provide an aerial platform for working on the go.

Aerial platform according to the present invention for achieving the object as described above is characterized in that the wheel of the mobile bogie is connected to the mobile bogie so that the angle can be adjusted to change the direction at a right angle relative to the front through the actuator.

In addition, the present invention includes a load cell installed in the lifting means on the operation for detecting in real time the load transferred to the lifting means; And a controller for stopping the driving of the lifting means or generating a warning when the current load is greater than the previously stored load by comparing the current load detected from the load cell with the previously stored load.

In addition, the present invention includes a scaffold that is connected to the lifting means to elevate, the railing standing on the circumference of the scaffold, the scaffold, a square-shaped main scaffold connected to the lifting means, the peripheral portion of the main scaffold It is composed of a plurality of extension scaffolding that is connected to the main scaffold extendable, the extension scaffolding end is opposed to the main scaffold is mounted to be foldable through the hinge when not in use to stand on the circumference of the main scaffold The handrail is configured to unfold in parallel with the main scaffold, and the handrails are coupled to the main scaffold or the extended scaffold so that one side of the extended scaffold may be disposed on two sides facing each other. 2 railings, characterized in that consisting of the 2-3 railings erected on the edge between the 2-1, 2-2 railings.

According to the aerial platform according to the present invention, when the wheel of the moving cart is adjustable in a right angle with respect to the front to move in a right direction, the wheel is adjusted in a right direction without the need to move while adjusting the moving cart several times back and forth After that, it can move in a right angle in one operation, so the travel time is very short, and the aerial platform can be safely moved even in areas where the surroundings can fall, such as subway platforms, thereby improving the reliability and safety of the aerial platform.

In addition, if the load is over the set value by detecting the load transferred to the lifting means, it generates a warning sound or a warning light or stops the driving of the lifting means so that it does not proceed excessively, thus extending the life of the equipment and falling the worker and the load due to the malfunction. You can prevent such accidents.

In addition, by minimizing the volume by concealing the extension footrest on the main footrest to prevent interference with the surrounding structures during movement, the operator can work in a comfortable posture by securing a wide working space through the extension footrest during work Work can be performed even without moving the work, so that the working time can be shortened.

As shown in Figure 1, the aerial platform 100 according to the present invention, a plurality of wheels 111 is mounted and the moving trolley 110 is moved by its own driving force, consisting of a footrest and a handrail to provide a workspace It is moved by the moving trolley 110 and is provided between the working phase 120, and the lifting means 130 is installed between the moving cart 110 and the working phase 120 to elevate the working phase.

As shown in FIG. 2, the wheels 111 are driven by their own driving force to drive the moving trolley 110. It receives and drives.

One or more wheels 111 may be installed in front and rear, respectively, for stable support and driving, and the wheels installed in front may be steering wheels for turning the mobile cart 110.

Then, the wheel 111 is connected to the moving cart 110 through the angle adjusting shaft 113 so that the angle can be adjusted in the steering and right angle direction, the angle adjusting shaft 113 is an actuator 114 (hydraulic cylinder, etc.) It is configured to rotate by force. That is, the angle adjusting shaft 113 is rotated by the actuator 114, the angle of the wheel 111 is converted to 90 degrees with respect to the front.

The actuator 114 and the angle adjusting shaft 113 are connected in various ways such as can be connected through a connecting rod.

The drive motor 112 and the actuator 114 for driving the wheel 111 are driven by an operation made through a wired or wireless remote controller or an operation panel.

According to the aerial platform according to the present invention configured as described above, the wheel 111 is driven through the drive motor 112 to move the aerial platform 100 to the working place.

The wheels 111 disposed in front of the wheels 111 are steering wheels, and the aerial platform 100 can be moved in a desired direction by adjusting the angle of the steering wheels. By the angle adjustment of the angle adjusting shaft 113 can be made.

On the other hand, as shown in Figure 3, while working in the aerial platform 100 position A position is required to move to the B position in the right-angle direction through the actuator 114 to adjust the angle of the wheel 111 at a right angle. Subsequently, when the wheel 111 is driven through the driving motor 112, the aerial platform 100 moves to the B position.

Therefore, the aerial platform 100 in the A position can be moved to the B position in one operation without having to move the aerial platform 100 several times back and forth while adjusting the angle of the wheel 111.

Hereinafter, it will be described to control the aerial platform 100 in the case of a load load larger than the design load by sensing the load load.

The working phase 120 is supported by the lifting means 130. That is, the load of the working phase 120 is transferred to the lifting means 130, in the present invention by detecting the load transferred to the lifting means 130 by detecting the loading load of the working phase 120 aerial platform 100 ) Control the driving.

First, as shown in FIG. 4, the elevating means 130 has the same structure as the related art, and two links 131 and 132 are hinged 133 to each other and are forcibly folded and supported by the hydraulic cylinder.

Here, the load cell for detecting the load transferred to the hinge 133 inside the hinge 133 connecting the bush 135 and the two links 131, 132 for connecting the hydraulic cylinder of the elevating means 130. 134 is installed.

The load cell 134 is connected to the controller via wired or wireless to apply a load detected in real time to the controller, the controller compares the preset design load and the current load to generate a warning light or a warning sound when the current load is greater than the design load, Driving of the elevating means 130 and the driving motor 112 can be stopped.

Hereinafter, the working phase 120 for securing the working space will be described.

Work phase 120 is composed of scaffolding and railings, the scaffolding and railings can provide a wide and safe working space through the following embodiments.

As in FIG. 5, the scaffold 140 includes a main scaffold 141 and three extension scaffolds 142, 143, and 144.

The main scaffold 141 is connected to the lifting means for lifting, and the extension scaffoldings 142, 143, and 144 are connected to each other. One surface of the rectangular main scaffold 141 is provided with a door 145 for the operator to enter and exit.

The extended scaffoldings 142, 143, and 144 may include first to third extending scaffolds 142, 143, and 144 disposed on three surfaces except one surface on which a door is formed among four surfaces of the main scaffold 141 having a quadrangular shape.

For convenience of description, the first extension footing 142 and the first extension footing that are installed on one side of two shorter lengths among the four sides of the main footing 141 in the case where the main footing 141 is rectangular as shown in the drawing. The second and third extension scaffolds 142 and 142 are provided on both sides of the 142, respectively.

The first to third extension scaffolding (142, 143, 144) is to ensure a space for the operator to work around the main scaffold 141, that is, it is not used when the operator does not work, so minimize the volume when moving And it is configured to be used only during work, for example, a drawer, folding is possible.

The first extension scaffold 142 is applied as a drawer, the second, third extension scaffold 143, 144 is shown as being applied in a folding manner.

First, the first extension scaffold 142 is formed smaller than the main scaffold 141 to fit the drawer type is inserted into the main scaffold 141, the first extension scaffold 141 on both sides in the width direction of the main scaffold 141. At least one roller (not shown) is installed to guide the sliding of the.

One side of the second extension scaffold 143 is pivotally connected to the main scaffold 141 by one or more hinges 143a or the like. The main scaffold 141 and the second extension scaffold 143 are connected to the upper side by the hinge 143a in an unfolded state so that the facing sides are in contact so that the second extension scaffold 143 is no longer struck down.

The second extension scaffold 143 is to be unfolded only during the operation, the locking means is provided to maintain the standing state with respect to the main scaffold 141 when not in use. The locking means may have any configuration capable of fixing the second extension scaffold 143 to the main scaffold. For example, the locker 143b may be rotatably coupled to the second extension scaffold 143 as shown in the drawing. The locker 143b is fixed to a fixed structure (shown in the drawing is a locking mechanism to which the locker 143b is caught and fixed is formed in the first handrail).

Since the third extension scaffold 144 has the same structure as the second extension scaffold 143, a detailed description thereof will be omitted.

Hereinafter, specific embodiments of the handrails provided on the scaffold 140 will be described.

<Example 1>

As shown in FIG. 5, the handrail 150 should be provided in all directions of the scaffold 140, and the main scaffold 141 is surrounded by the first to third extension scaffolds 142, 143, and 144 and the door 145. Even if the handrail is installed only in the third to third extension scaffoldings 142, 143, and 144, the fall accident may not occur in all directions.

The first railing 151 may be fixed in a standing state in three directions of the first extension scaffold 142 because the first extension scaffold 142 is a drawer type.

Since the second railing 152 is configured as the second extension scaffold 143 is a folding type, it cannot be applied as a fixed structure like the first railing 151, and the 2-1, 2-2 railings facing two directions One side of the 152-1, 152-2 is folded and rotatably connected to the main footrest 141, and the second ledge between the second railings 152-1 and 152-2 is 153-. 3) is removable.

The second and second handrails 152-1 and 152-2 are arranged side by side along the longitudinal direction of the main scaffold 141 when not in use, so that the second extension scaffold 143 is folded toward the main scaffold 141. The inner side of the second extension footrest 143 is not interfered with the second extension footrest 143, and in use, the free end is rotated and fixed in two opposite directions of the second extension footrest 143.

The 2-1,2-2 handrails 152-1, 152-2 may be variously fixed to the second extension scaffold 143 by pins, and the plate-like insert 154 is formed at the lower end as shown in the drawing. In addition, the insertion piece 154 can be fixed by being inserted into the insertion groove 143c formed in the bottom portion of the second extension scaffold 143.

When the second railing 152-3 is used as a single product, the second railing 152-3 is disposed on one surface of the second extension scaffold 143 which the second railings 152-1 and 152-2 cannot block. It is stored separately.

When the second railing 152-3 is fixed to only one surface of the second extension scaffold 143, the second railing 152-3 may perform a function as a railing. -2 is fitted to be stored or used in handrails (152-1, 152-2). That is, the first and second fixing parts 155 and 156 are formed on both sides of the second and second handrails 152-1 and 152-2, respectively, to which the second and third handrails 152-3 are fitted. The first fixing part 155 is fixed when not in use, and the second fixing part 156 is fixed when used.

Since the third railing 153 is configured in the same manner as the second railing 152, a detailed description thereof will be omitted.

According to this embodiment of the handrail, the first extension scaffold 142 and the first railing 151 is inserted into the main scaffold 141 when not in use or running, the second and third extension scaffolding (143,144) is the main scaffolding It is folded to the side (141).

The 2-1,2-2 handrails 152-1, 152-2 are arranged along the longitudinal direction of the main footrest 141 and are disposed inside the second extension footrest 143, and the 2-3 handrails 152- 3) both sides are fixed to the first fixing part 155 of the 2-1, 2-2 handrails 152-1, 152-2.

Therefore, the main scaffold 141 that the worker can work is surrounded by the first to third handrails (151, 152, 153).

Meanwhile, the first extension scaffold 142 is drawn out from the main scaffold 141 during work to secure a space for the front, and the second extension scaffold 143 is extended to be arranged side by side with the main scaffold 141.

Subsequently, the second guardrail 152-3 is separated from the first fixing part 155 of the second guardrails 152-1 and 152-2, and then the second guardrail 152-3 is disposed. The free ends of the handrails 152-1 and 152-2 are rotated so that the 2-1,2-2 handrails 152-1 and 152-2 are parallel to the edges of the second extension scaffold 143. 154 is inserted into the insertion groove 143c and the second, -1,2-2 handrails 152-1 and 152-2 are fixed to the second extension scaffold 143.

Remaining edges of the second extension scaffold 143 by inserting both sides of the 2-3 railing 152-3 into the second fixing part 156 of the 2-1, 2-2 railing 152-1, 152-2. Prevent wealth

Thus, the preparation of the scaffolding and the railing for the work is completed, the worker performs the work while moving the space secured by the main scaffold 141, the first to third extended scaffold (142, 143, 144).

On the other hand, when the operation is completed, the 2-3 balustrade 152-3 is removed, and the 2-1,2-2 balustrades 152-1 and 152-2 are folded toward the main scaffold 141, and the second 3 railings (152-3) are fixed to the first fixing part 155 of the 2-1,2-2 handrails (152-1,152-2), and then the second extension footrest 143 is fixed to the main footrest 141. Fold to the side and lock.

<Example 2>

The railing of the first embodiment described above is inconvenient to separate and fix the second railing 152-3, and the railing according to the present embodiment is configured to easily use the second and third railings. It features.

6A and 6B, the second railing 152-3 is installed to reciprocate along the width direction of the second extension scaffold 143, and the second railings 152-1 and 152. -2) is configured to be foldable during the reciprocating movement of the second handrail 152-3.

Specifically, the rail R1 is formed in the edge portion of the main scaffold 141 and the second extension scaffold 143 along the width direction, and the bottom of the second railing 152-3 slides on the rail. Is connected as possible.

On one side of the 2-3 railing (152-3) is formed a rail (R2) is slidably connected 2-1, 2-2 railings (152-1, 152-2).

One side of the 2-1,2-2 handrails 152-1 and 152-2 are rotatably connected to the main scaffold 141, and the other side thereof, the opposite end thereof, is one side of the second handrail 152-3. Slidably connected to the rail (R2) formed in.

According to this embodiment, when not in use, the second railing 152-3 is disposed on the edge of the main scaffold 141, and the second extension scaffold 143 is folded toward the main scaffold 141 to form the second-second hand. 3 It is disposed outside of the handrail 152-3.

On the other hand, when using the second extension scaffold 143 for work or the like to expand the second extension scaffold 143 and side by side with the main scaffold 141, the rail is naturally matched, the second railing (152-3) When pushed toward the edge of the second extension scaffold 143, the 2-1, 2-2 handrails (152-1, 152-2) are rotated and unfolded along the 2-3 railing (152-3). Therefore, when the 2-3 railing 152-3 is fixed to the end of the second extension scaffold 143, the 2-1, 2-2 railings 152-1, 152-2 are connected to the second extension scaffold 143. It will be built to block the border.

When the second extension scaffold 143 is folded after the work is completed, first, the 2-3 railing 152-3 is pulled toward the main scaffold 141, and the linear movement of the second railing 152-3 is performed. Accordingly, the 2-1, 2-2 handrails 152-1, 152-2 are folded while rotating in the direction in which they are collected.

Since the third railing 153 is configured in the same manner as the second railing 152, a detailed description thereof will be omitted.

In the present embodiment, the second to second handrails 151, 152, and 153 are not limited to those installed on the main scaffold 141, but may be formed on the second extension scaffold 143.

<Example 3>

7 is a second extension scaffold 143 in which the lower rails are rotatably coupled to the facing surfaces of the second extension scaffold 143, respectively. Fold to the side or unfold on the contrary.

The second railing 152-3 is rotatably coupled to the lower surface of the second extension scaffold 143 so as to be folded toward the second extension scaffold 143 or reversely.

Arc-shaped rails R3 are formed at one side of the second railing 152-3, and the second railings 152-1 and 152-2 are the second railings 152-. It is slidably connected to the rail R3 of 3).

A triangular fixing piece or the like may be inserted between these handrails so as to maintain the standing positions of the second to second handrails 152-1, 152-2, and 153.

According to the embodiment of the railing configured as described above, when the second extension scaffold 143 is extended in parallel with the main scaffold 141, the second railing 152 is unfolded together with the second extension scaffold 143.

The second handrail 152 is in a folded state at the bottom of the second extension scaffold 143. When the second handrail 152-3 is lifted, the second handrail rotates, and at this time, the second handrail 2-2 handrails 152-1 and 152-2 are slid out along the rail R3 of the second handrail 153-3.

When the work is completed, the second railings 152-1 and 152-2 are collected inward so that the second railings 153-3 are folded to the second extension step 143 and then the second When the -3 handrail is folded toward the second extension scaffold 143, the 2-1,2-2 handrails 152-1 and 152-2 are folded together to the bottom side of the second extension scaffold 143.

1 is a perspective view of an aerial platform according to the present invention.

Figure 2 is an enlarged view of the installation state of the wheel applied to the aerial platform according to the present invention.

Figure 3 is an operating state of the wheel of the aerial platform according to the present invention.

Figure 4 is an installation state of the load cell applied to the aerial platform according to the present invention.

5 to 7 are each an illustration of a handrail applied to the aerial platform according to the present invention.

Claims (10)

The work cart 120, which is equipped with a plurality of wheels and moves by its own driving force, provides a space for moving by the mobile cart and a worker works on board, and the work with the mobile cart. In the aerial platform comprising elevating means 130 is installed between the upper and lower lifting the work phase, In the above work, A footrest which is connected to the lifting means and lifts up and down; The scaffolding is composed of a rectangular main scaffold 141 to which the lifting means is connected, a plurality of extension scaffolding (142, 143, 144) extendably connected to the main scaffold on the circumference of the main scaffold, The extension footrest is configured to be foldable through the hinge end portion facing the main footrest is built in the circumference of the main footrest when not in use and is arranged to be parallel to the main footrest in use, The handrail is one side is rotatably coupled to the main scaffolding or extended scaffolding 2-1, 2-2 handrails (152-1, 152-2) to be deployed to be disposed on two opposite sides of the three sides of the extended scaffold, Sue work platform including a 2-3 railing (152-3) built on the edge between the 2-1, 2-2 railings. 2. The aerial platform of claim 1, further comprising a door 145 installed at an edge of the main scaffold to guide the entrance and exit of the main scaffold. According to claim 1 or claim 2, The 2-1, 2-2 handrail is one side is rotatably connected to the main scaffold arranged in the longitudinal direction of the main scaffolding or unfolded toward the edge of the extension scaffold, 2-3 balustrade is a aerial platform, characterized in that both sides are detachably connected to both sides of the 2-1,2-2 balustrade. 4. The aerial platform of claim 3, wherein first and second fixing parts 155 and 156 are fixed to both sides of the second and second handrails, respectively, when the second and second handrails are fixed. . The method of claim 4, wherein the insertion piece 154 is formed at the bottom of the free end of the handrails 2-1 and 2-2, and the insertion groove 143c into which the insertion piece is fitted is formed at the bottom of the extension footrest. Aerial work bench featured. The handrail of claim 1 or 2, wherein the second railings are connected to each other so as to reciprocate in the width direction of the extension footings through rails formed at the bottom of the extension footstool. The one side is rotatably connected to the main scaffolding or extended scaffolding, the end facing each other is slidably connected to the 2-3 railings, the aerial platform, characterized in that folded in the forward and backward progress of the 2-3 railings. The handrail of claim 1 or 2, wherein the 2-1 to 2-3 handrails are connected to the lower part so as to be folded or unfolded toward the extension scaffold, respectively. The aerial platform is superimposed on the bottom of the 2-3 railing and connected to the curved rail formed on the 2-3 railing is folded at the time of rotation of the 2-3 railing. The aerial platform according to claim 1 or 2, wherein the extended scaffold is slidably connected to the main scaffold so that the extended scaffold is inserted in and pulled out. The work cart is provided with a plurality of wheels and is moved by its own driving force, the work cart provides a space for moving by the mobile cart and a worker works, and is installed between the mobile cart and the work table. In the aerial platform comprising a lifting means for elevating the work phase, An angle adjusting shaft 113 connecting the wheel of the moving trolley to the moving trolley; Aerial platform, characterized in that it comprises an actuator (114) forcibly adjusting the angle of the angle adjustment shaft. The work cart is provided with a plurality of wheels and is moved by its own driving force, the work cart provides a space for moving by the mobile cart and the worker works, and is installed between the mobile cart and the work table. In the aerial platform comprising a lifting means for elevating the work phase, A load cell 134 installed on the elevating means for detecting a load transferred to the elevating means in real time; And a controller for comparing the current load detected from the load cell with a pre-stored load and stopping the driving of the lifting means or generating a warning when the current load is greater than the pre-stored load.

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